Because the same type of defeats happen all the time at Everton. Losing to the RS in the semi final a few years back, losing to Wigan 3-0 in the quarter final at home, lose to Arsenal the next year, get thrashed by Dynamo Kiev, lose 2 semi finals against relatively average opposition, Pickford giving VVD a winner on his debut in the 3rd round, giving them a win the next season. There is a continual pattern of us bottling it when it really matters, at a certain point you can't simply blame bad luck or poor refereeing decisions.
This is why we're in this mess, we kept Silva when he should of shown the door ages ago, we could of realistically had a decent chance at going for Europe this season, yet we kept him on so it's too late. Losing at Liverpool in December wasn't a huge deal, considering they have only dropped points once in the league this season. However losing to Liverpool's B team, really is unforgivable. It's like what I said to somebody after we beat West Ham, we'll go to Brighton and lose next week and we did. Our players turn up when they feel like it there is zero pressure on them to actually succeed.